nav{
	position:absolute;
	flex-direction:column;
	width:100%;
	top:0;
}
nav a{
	display:none;
	width: 80%;
	border-bottom:1px solid #eee;
}
nav:hover{
	height: 300px;
	align-items: center;
}
nav:hover a{
	display:block;
}
.banner{
	margin-top:50px;
	background-image: url(./images/02.jpg) ;
}
.product{
	flex-wrap: wrap;
	justify-content: space-around;
}